本文运用美国道化学公司火灾道氏指数评价(第七版)对克石化厂加氢联合装置各单元的火灾爆炸危险性进行分析、分级,并就影响因素进行探讨,提出一些控制措施。 In this paper, Dow Corning Fire Dow Indexes (Seventh Edition) were used to analyze and classify the fire and explosion risk of units in the hydrogenation unit of Petrochemical Plant. Some influencing factors were discussed and some control measures were put forward.